Remove codeql-go folder from vscode workspace

The submodule for Go no longer exists since the codeql-go repo was retired.

vscode-codeql-starter.code-workspace

@@ -21,9 +21,6 @@
 		{
 			"path": "codeql-custom-queries-ruby"
 		},
-		{
-			"path": "codeql-go"
-		},
 		{
 			"path": "ql"
 		}